From "Aerokurier": Discus 2c with 18m wingspan.

Schempp-Hirth is another manufacturer to be now stretching the wings in the
Standard Class. The Discus 2 is to be available in future in a combination
version with both 15m and 18m wingspan. Work is set to start on building the
first wing after the summer closedown. The maiden flight is expected to take
place in the spring of 2004.

The wing contour of the new Discus 2c has been optimised for both wingspan
versions. As a result, the separation point is located further inboard (as on
the Ventus 2), at the point where the flaperon is presently split on the Discus
2a/b. Although there is no change in layout compared with the Discus 2a/b, with
short tip extensions featuring once again, the layout of the large outboard
wing section for the 18m version resembles the Duo Discus, with swept-back
trailing edge.